Twine-tension for binders.



AFPUCATION FILED IULY 6, 1915.

Eatented Jan( 14C, 19l9-- nia-irren s'rnrs PATENT ernten GUSTAF HAMMER, 0F CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO INTERNATIONAL HARVESTER COMPANY, A CORPORATION 0F NEW JERSEY.

l TWINE-'IENSION FOR BINDERS.

Specification of Letters Patent.

Patented Jan. 14, 1919.

Application filed July 6, 1915. `Serial No. 38,282.

To all whom it may concern:

Be it known that I, GUSTAF HAMMER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Twine Tensions for Binders, of which the following is a full, clear, and exact specification. K

My invention relates to twine tensions for binders.

It has for its object to maintain under tension in an improved manner the twine supplied from the twine can of a harvester or the like to the binding needle thereof so that all undue strains or deleterious slack in the twine are elfectually removed and irregularities in quality of the twine fed, arising, for instance, from knots or the like, are prevented from producing such strains or interrupting the maintenance of the even tension desired. I attain these objects by an improved construction of twine tension comprising coperating stationary and movable twine engaging members, preferably in .the p form of collars, which operate in an iniproved manner whereby the increased tension on the twine causes the movable twine engaging member to move away from the stationary member in the direction of the source of tension. Y

In the accompanying drawings I have, for purposes of illustration, shown one embodiment which my invention may assume in practice. f

In these drawings;

Figure l is a side elevation of a grain binder equipped with my improvement;

Fig. 2 is a top plan view of the twine tension.

Fig. 3 is a side elevation of the twine tension.

In these drawings I have shown a binder 1 of standard construction having a twine can 2, the usual needle and binding mechanism being omitted as unnecessary, as it is well understood that when the device is used in connection with a binder, a binding needle moves upward through the deck 3. Upon this binder the twine tension is mounted upon a bracket 4 at a point adjacent the rear end of the deck 3 and above the twine can 2, the twine passing diagonally upward and forward, preferably, though not necessarily, through a guide 5, to reach the tension, moving upward through it, and thereafter again extending diagonally downward and forward to the binding needle in a. path substantially parallel to its path through the guide 5 and the tension.

In my improved construction the tension comprises a stationary section and a reciprocable section, each carrying a twine engaging or tension member. The stationary section 6 is fixed to the bracket 4 and hasupstanding ears 7 on its opposite side and an upstanding lip 8 on its end adjacent the twine can. Movable between the ears 7 in a path to and from the lip 8 is the reciprocable section 9, which preferably assumes the form of a reclining U-shaped member slidable on its side. The twine engagingvor tension member on this section 9 is shown in the form of a pinion l0 which normally engages with its coperating tension member, preferably also in theform of a pinion l1 journaled on the ears 7 of the stationary section, the engaging or meshing action ofthese parts being due to a spring l2. As shown, this spring is coiled about the free end of a member orrbolt 13 which is seated in the bowed end of the member 9 and extends longitudinally through an opening in the lip 8, the spring 12l normally tending to assume its expanded position on the member 13 and acting between the outer surfaces of the lip 8 and an adjustable washer nut connection 14 carried on the free end of in such a manner as to hold the member 17,3V the pinions in mesh. The pinion. 10 is, however, movable out of mesh with the pinion 11 whenever increased tension is applied to the twine, slots 15 being provided in the sides of the movable section 9 yto permit such a movementV and the twine being so passed through the tension as to bring about this movement when increased tension is applied to it, the twine entering the tension through a nonfraying eyelet 16 in the bottom of the member 6, and extending upward between the pinions 10 and 1l and outward over the movable pinion 10 between arcuate, inwardly extending, non-fraying twine guiding cheeks 17 on the member 9 in a path substantially p arallel to that by which it entered the tonsion. Y' l In the operation of this device, as the twine Yis drawn from the receptacle 2 by the successive actions of the needle and binding caused by ravelings or the intentional knotting following the connection of a new ball,

can interfere with the efficient operation vof the device or cause breakage of the twine, the pull on the twine from the. needle instead actingdirectly upon the movable pin ion and against the spring 12 in such a man ner that the pinion is readily moved in the direction of the source of tension and separated Vfrom the stantionary pinion tolet the twine pass freely through the tension.V

By the use of 4my. improved constructiom the necessity for frequent stopping of the machine to straighten out the twine or rethreading the needle has been removed. It has further been found that, due to the provision of my improved tension, it is unnecessary to use binder twineof such an expensivejcharacter as has heretofore been con-` sidered necessary, the usual difficulties attendant upon tlie use of a cheaper twine being overcomeV by my improvedl tension device. It should here also be noted that the construction shown is of an exceptionally sturdy character andlthat it may be very .readily and cheaply manufactured, the stationary and movable sections being, if desired, stamped from sheet metal.

While I have in this application specically describedone embodiment which my invention may assume in practice, it is, of course, to be understood that the form shown is used for purposes of illustration andjthat the invention may be modified without departing from its spirit.

`What claim as new is:

1. In a twine tension, a stationary member U-shaped invlongitudinal section, a roller journaled on saidstationary member at one side of the end wall thereof, a movable member reciproeable upon said stationary member transversely with respectto the axis ofv said roller and between the side walls thereof, a second roller journaled on said reeiprocable lmember on the opposite side ofsaid first mentioned roller from theendwall thereof, means operatively connected vbetween said reciprocable member and the end wall of said stationary member normally retaining said rollers in twineengaging position, and means carried by said reciprocable Copies et this patentmay Vbefobtaine Vfor five cents eachybyaddressing I1 Washington, D. C.

member Jfor guiding the twine as it leaves the reciprocable section.

2. In a twine tension, a stationary section,

a rotatable twine engaging member joui-,

engaging member on said stationary section,

resilient means normally holding said twine engaging members in twine .engaging posi" tion, and means on said stationary member locatedv substantially beneath s the v coperating surfaceslof said twine engaging vnieinV bers for cle-fleeting the twine u'pwardbetween the same.

3. ln a twine tension, la stationary section having an upstanding vmember thereon, a roller iournaled on said stationary section at one Vside ofA said upstanding member, a

andrecipro'cable transversely relative to the axis of said roller, a rollerljournaled in said;V movable section on the opposite side of saidV first mentioned roller from said upstanding member, a longitudinally disposed memberr carriedby said movable section at a point between saidV firstl mentioned roller and up@ standing" member and protruding through said upstanding memben'anda coiled spring carried on theV protrudingend'of said longi-l tudinally disposed member normally main#V tainingy said rollers in .twine engaging position.

Li. In a twine tension, a stationary section lipat one end ofthe same, a piniony journaled-in said' upstanding sides, a substantially U-shaped member seated between said? sides having its bowed portion disposed ad-V` jacent said lip and slots in its sides whereby it'may move longitudinally vof saidstationary section, a pinion journaled in said-v U- V having upstanding sides and an upstanding shaped member on the opposite side of said" first mentioned pinion from said lip, a longitudinally disposed member carried bythe bowed portion of said U-shaped member and protruding through said lip, and a coiled spring carried on the protruding end of said longitudinally disposed member operative between the free end of said member and the outer surface of said lip.

5. In a twine tension, a stationarysection, a twine engaging member journaled thereon, and a movable section reciprocable with respect to saidA twine engaging member and having inwardly curved twine engagingl cheeks on-its opposite sides.y

In testimony vwhereof-l affix my signature.V

ensinr HAMMER] hev Commissionernvof Patents, 

